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Finding the Fourth Proportional to 489.68, 737.43 and 435.35

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Solution

The fourth proportional to 489.68, 737.43 and 435.35 is: 655.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.68 : 737.43 = 435.35 : x
  2. Step 2: Convert to fraction form
    489.68/737.43 = 435.35/x
  3. Step 3: Cross multiply
    489.68x = 737.43 × 435.35
  4. Step 4: Simplify right side
    489.68x = 321,039.51
  5. Step 5: Solve for x
    x = 321,039.51/489.68
  6. Step 6: Final answer
    x = 655.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.